1.

Which combination is correct for K metal

Answer»

(I)(iv)(S)
(II)(III)(P)
(III)(ii)(R)
(IV)(i)(Q)

Solution :(I)No colour in flame test (Be)
BeO is Amphoteric oxide in nature
`(BeH_2)_n`

ELECTRON deficient and polymeric
(II)VIOLET colour in flame test ( K Metal)
`KO_2`(Potassium super oxide ) is orange yellow
`KO_3`(Potassium ozonide) is orange-red SOLID
(III)yellow colour in flame test (NA metal)
`Na_2CO_3`(sodium carbonate ) is manufactured by solvay process
microcosmic salt `to Na(NH_4)HPO_4. 4H_2O`


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